Gray matter decrease in patients with chronic tension type headache.

Schmidt-Wilcke, T; Leinisch, E; Straube, A; Kämpfe, N; Draganski, B; Diener, H C; Bogdahn, U; May, A · Neurology · 2005

cross_sectional · Level IV

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Abstract

Using MRI and voxel-based morphometry, the authors investigated 20 patients with chronic tension type headache (CTTH) and 20 patients with medication-overuse headache and compared them to 40 controls with no headache history. Only patients with CTTH demonstrated a significant gray matter decrease in regions known to be involved in pain processing. The finding implies that the alterations are specific to CTTH rather than a response to chronic head pain or chronification per se.

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